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# Copyright Pincer 2021-Present |
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# Full MIT License can be found in `LICENSE` at the project root. |
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from __future__ import annotations |
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import copy |
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from dataclasses import dataclass, fields, _is_dataclass_instance |
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from enum import Enum |
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from typing import Dict, Tuple, Union, Generic, TypeVar, Any, Optional |
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from .types import MissingType |
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T = TypeVar("T") |
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def _asdict_ignore_none(obj: Generic[T]) -> Union[Tuple, Dict, T]: |
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""" |
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Returns a dict from a dataclass that ignores |
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all values that are None |
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Modification of _asdict_inner from dataclasses |
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:param obj: |
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Dataclass obj |
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""" |
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if _is_dataclass_instance(obj): |
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result = [] |
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for f in fields(obj): |
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value = _asdict_ignore_none(getattr(obj, f.name)) |
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if isinstance(value, Enum): |
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result.append((f.name, value.value)) |
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# This if statement was added to the function |
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elif not isinstance(value, MissingType): |
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result.append((f.name, value)) |
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return dict(result) |
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elif isinstance(obj, tuple) and hasattr(obj, '_fields'): |
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return type(obj)(*[_asdict_ignore_none(v) for v in obj]) |
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elif isinstance(obj, (list, tuple)): |
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return type(obj)(_asdict_ignore_none(v) for v in obj) |
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elif isinstance(obj, dict): |
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return type(obj)( |
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( |
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_asdict_ignore_none(k), |
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_asdict_ignore_none(v) |
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) for k, v in obj.items() |
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) |
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else: |
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return copy.deepcopy(obj) |
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class HTTPMeta(type): |
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# TODO: Fix typehints |
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__attrs = { |
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"_client": Optional[Any], |
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"_http": Optional[Any] |
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} |
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def __new__(mcs, *args, **kwargs): |
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http_object = super().__new__(mcs, *args, **kwargs) |
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if getattr(http_object, "__annotations__", None): |
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for k, v in HTTPMeta.__attrs.items(): |
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http_object.__annotations__[k] = v |
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setattr(http_object, k, None) |
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return http_object |
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@dataclass |
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class APIObject(metaclass=HTTPMeta): |
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""" |
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Represents an object which has been fetched from the Discord API. |
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""" |
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# def __post_init__(self): |
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# fin = { |
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# key: _eval_type(ForwardRef(value), globals(), globals()) |
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# for key, value in self.__annotations__.items() |
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# } |
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# |
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# # pprint(self.__annotations__) |
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# # pprint(get_type_hints(self)) |
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# print(fin) |
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# print("Post init", self) |
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@classmethod |
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def from_dict( |
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cls: Generic[T], |
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data: Dict[str, Union[str, bool, int, Any]] |
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) -> T: |
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""" |
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Parse an API object from a dictionary. |
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""" |
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if isinstance(data, cls): |
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return data |
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# Disable inspection for IDE because this is valid code for the |
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# inherited classes: |
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# noinspection PyArgumentList |
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return cls( |
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**{ |
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key: ( |
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value.value if isinstance(value, Enum) else value |
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) for key, value in data.items() |
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} |
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) |
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def to_dict(self) -> Dict: |
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""" |
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Transform the current object to a dictionary representation. |
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""" |
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return _asdict_ignore_none(self) |
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Pincer-org /
Pincer
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